Documentation & API reference
Constants
Primary tabs
| Name | Location | Description | Direct uses |
Strings |
|---|---|---|---|---|
| DRUPAL_AUTHENTICATED_RID |
drupal/ |
Role ID for authenticated users; should match what's in the "role" table. | 25 | |
| DRUPAL_KILOBYTE |
drupal/ |
The number of bytes in a kilobyte. | 3 | |
| LANGUAGE_SYSTEM |
drupal/ |
Special system language code (only applicable to UI language). | 4 | |
| LANGUAGE_NOT_SPECIFIED |
drupal/ |
The language code used when no language is explicitly assigned (yet). | 187 | |
| LANGUAGE_NOT_APPLICABLE |
drupal/ |
The language code used when the marked object has no linguistic content. | 2 | |
| LANGUAGE_MULTIPLE |
drupal/ |
The language code used when multiple languages could be applied. | 2 | |
| LANGUAGE_DEFAULT |
drupal/ |
Language code referring to the default language of data, e.g. of an entity. | 6 | |
| LANGUAGE_CONFIGURABLE |
drupal/ |
The language state when referring to configurable languages. | 7 | |
| LANGUAGE_LOCKED |
drupal/ |
The language state when referring to locked languages. | 7 | |
| LANGUAGE_ALL |
drupal/ |
The language state used when referring to all languages. | 22 | |
| LANGUAGE_SITE_DEFAULT |
drupal/ |
The language state used when referring to the site's default language. | 2 | |
| LANGUAGE_TYPE_CONTENT |
drupal/ |
The type of language used to define the content language. | 12 | |
| LANGUAGE_TYPE_INTERFACE |
drupal/ |
The type of language used to select the user interface. | 55 | |
| LANGUAGE_TYPE_URL |
drupal/ |
The type of language used for URLs. | 4 | |
| LANGUAGE_LTR |
drupal/ |
Language written left to right. Possible value of $language->direction. | 3 | |
| LANGUAGE_RTL |
drupal/ |
Language written right to left. Possible value of $language->direction. | 5 | |
| UNICODE_ERROR |
drupal/ |
Indicates an error during check for PHP unicode support. | 1 | |
| UNICODE_SINGLEBYTE |
drupal/ |
Indicates that standard PHP (emulated) unicode support is being used. | 3 | |
| UNICODE_MULTIBYTE |
drupal/ |
Indicates that full unicode support with the PHP mbstring extension is being used. | 7 | |
| CHECK_PLAIN |
drupal/ |
Flag for drupal_set_title(); text is not sanitized, so run check_plain(). | 1 | |
| PASS_THROUGH |
drupal/ |
Flag for drupal_set_title(); text has already been sanitized. | 36 | |
| DRUPAL_PHP_FUNCTION_PATTERN |
drupal/ |
Regular expression to match PHP function names. | 10 | |
| CONFIG_ACTIVE_DIRECTORY |
drupal/ |
$config_directories key for active directory. | 5 | |
| CONFIG_STAGING_DIRECTORY |
drupal/ |
$config_directories key for staging directory. | 4 | |
| SCHEMA_UNINSTALLED |
drupal/ |
Indicates that a module has not been installed yet. | 9 | |
| SCHEMA_INSTALLED |
drupal/ |
Indicates that a module has been installed. | 2 | |
| CONFIG_IMPORT_LOCK |
drupal/ |
Config import lock name used to prevent concurrent synchronizations. | 2 | |
| SAVED_NEW |
drupal/ |
Return status for saving which involved creating a new item. | 16 | |
| SAVED_UPDATED |
drupal/ |
Return status for saving which involved an update to an existing item. | 17 | |
| SAVED_DELETED |
drupal/ |
Return status for saving which deleted an existing item. | ||
| CSS_SYSTEM |
drupal/ |
The default group for system CSS files added to the page. | 2 | |
| CSS_DEFAULT |
drupal/ |
The default group for module CSS files added to the page. | 2 | |
| CSS_THEME |
drupal/ |
The default group for theme CSS files added to the page. | 2 | |
| JS_SETTING |
drupal/ |
The default group for JavaScript settings added to the page. | 1 | |
| JS_LIBRARY |
drupal/ |
The default group for JavaScript and jQuery libraries added to the page. | 4 | |
| JS_DEFAULT |
drupal/ |
The default group for module JavaScript code added to the page. | 5 | |
| JS_THEME |
drupal/ |
The default group for theme JavaScript code added to the page. | 2 | |
| HTTP_REQUEST_TIMEOUT |
drupal/ |
Error code indicating that the request exceeded the specified timeout. | 2 | |
| DRUPAL_NO_CACHE |
drupal/ |
The block should not get cached. | 17 | |
| DRUPAL_CACHE_CUSTOM |
drupal/ |
The block is handling its own caching in its hook_block_view(). | 2 | |
| DRUPAL_CACHE_PER_ROLE |
drupal/ |
The block or element can change depending on the user's roles. | 5 | |
| DRUPAL_CACHE_PER_USER |
drupal/ |
The block or element can change depending on the user. | 2 | |
| DRUPAL_CACHE_PER_PAGE |
drupal/ |
The block or element can change depending on the page being viewed. | 3 | |
| DRUPAL_CACHE_GLOBAL |
drupal/ |
The block or element is the same for every user and page that it is visible. | 1 | |
| LOCALE_PLURAL_DELIMITER |
drupal/ |
The delimiter used to split plural strings. | 7 | |
| MARK_READ |
drupal/ |
Mark content as read. | 3 | |
| MARK_NEW |
drupal/ |
Mark content as being new. | 4 | |
| MARK_UPDATED |
drupal/ |
Mark content as being updated. | 3 | |
| RESPONSIVE_PRIORITY_MEDIUM |
drupal/ |
A responsive table class; hide table cell on narrow devices. | 5 | |
| RESPONSIVE_PRIORITY_LOW |
drupal/ |
A responsive table class; only show table cell on wide devices. | 6 |